/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package com.jfoenix.effects;

import javafx.scene.Node;
import javafx.scene.effect.BlurType;
import javafx.scene.effect.DropShadow;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;

/**
 * it will create a shadow effect for a given node and a specified depth level.
 * depth levels are {0,1,2,3,4,5} 
 * 
 * @author  Shadi Shaheen
 * @version 1.0
 * @since   2016-03-09
 */
public class JFXDepthManager {

	private static DropShadow[] depth = new DropShadow[]{
		new DropShadow(BlurType.GAUSSIAN, Color.rgb(0,0,0,0), 0, 0, 0, 0),
		new DropShadow(BlurType.GAUSSIAN, Color.rgb(0,0,0,0.26), 10, 0.12, -1, 2),
		new DropShadow(BlurType.GAUSSIAN, Color.rgb(0,0,0,0.26), 15, 0.16, 0, 4),
		new DropShadow(BlurType.GAUSSIAN, Color.rgb(0,0,0,0.26), 20, 0.19, 0, 6),
		new DropShadow(BlurType.GAUSSIAN, Color.rgb(0,0,0,0.26), 25, 0.25, 0, 8),
		new DropShadow(BlurType.GAUSSIAN, Color.rgb(0,0,0,0.26), 30, 0.30, 0, 10)};

	/**
	 * this method is used to add shadow effect to the node,
	 * however the shadow is not real ( gets affected with node transformations)
	 *
	 * use {@link #createMaterialNode()} instead to generate a real shadow  
	 */
	public static void setDepth(Node control, int level){
		level = level < 0 ? 0 : level;
		level = level > 5 ? 5 : level;
		control.setEffect(new DropShadow(BlurType.GAUSSIAN, depth[level].getColor() ,depth[level].getRadius(),depth[level].getSpread(),depth[level].getOffsetX(),depth[level].getOffsetY()));
	}

	public static int getLevels(){
		return depth.length;
	}

	public static DropShadow getShadowAt(int level){
		return depth[level];
	}
	
	/**
	 * this method will generate a new container node that prevent
	 * control transformation to be applied to the shadow effect
	 * (which makes it looks as a real shadow)
	 */
	public static Node createMaterialNode(Node control, int level){		
		Node container = new Pane(control);
		container.getStyleClass().add("depth-container");
		level = level < 0 ? 0 : level;
		level = level > 5 ? 5 : level;
		container.setEffect(new DropShadow(BlurType.GAUSSIAN, depth[level].getColor() ,depth[level].getRadius(),depth[level].getSpread(),depth[level].getOffsetX(),depth[level].getOffsetY()));
		return container;
	}
	
	public static void pop(Node control){
		control.setEffect(new DropShadow(BlurType.GAUSSIAN, Color.rgb(0,0,0,0.26) ,5, 0.05, 0, 1));
	}

}
